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Toshiba VTV1555 Service Manual

Toshiba color television/video cassette recorder
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SERVICE MANUAL
COLOR TELEVISION/
VIDEO CASSETTE RECORDER
VTV1555

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Summary of Contents for Toshiba VTV1555

  • Page 1 SERVICE MANUAL COLOR TELEVISION/ VIDEO CASSETTE RECORDER VTV1555...

  • Page 2: Servicing Notices On Checking

    SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY As for the places which need special attentions, Safety is secured against an X-ray by consider- they are indicated with the labels or seals on the ing about the cathode-ray tube and the high cabinet, chassis and parts.

  • Page 3: Tape Removal Method At No Power Supply

    TAPE REMOVAL METHOD AT NO POWER SUPPLY Remove the VCR block from the main unit. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) Remove the screw 1 of the Deck Chassis and remove the Loading Motor. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape. Rotate the Clutch Ass'y either of the derections to wind the Video Tape in the Cassette Case.

  • Page 4: Table Of Contents

    TABLE OF CONTENTS SERVICING NOTICES ON CHECKING ..................A1-1 HOW TO ORDER PARTS ......................A1-1 TAPE REMOVAL METHOD AT NO POWER SUPPLY ............A1-2 A2-1 TABLE OF CONTENTS ......................GENERAL SPECIFICATIONS ....................A3-1~A3-5 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. Boards ..........B1-1, B1-2 B2-1~B2-6 2.

  • Page 5: General Specifications

    GENERAL SPECIFICATIONS CRT Size / Visual Size 15 inch / 357.0mmV System CRT Type Flat Deflection degree Magnetic Field BV/BH +0.45G / +0.18G Color System Speaker 2Speaker Position Front Size 1.5 x 2.5 Inch Impedance 8 ohm Sound Output 1.5 W + 1.5 W 10%(Typical) 1.5 W + 1.5 W System...
  • Page 6 GENERAL SPECIFICATIONS On Screen Menu Display Menu Type Character Timer Rec Set Channel Setup Auto Tuning Ch Mapping Ch Tuning Ch Allocation TV Setup On/Off Timer Set Picture Audio VCR Setup Auto Repeat On/Off System Select Scene Repeat System Setup Clock Set Yes (Calendar 24h) Language...
  • Page 7 GENERAL SPECIFICATIONS G-12 Remote Unit RC-DM Control Glow in Dark Remocon Power Source Voltage(D.C) UM size x pcs UM-4 x 2 pcs Total Keys Keys Keys Power 0/AV CH/Tr Up CH/Tr Up/Page Up CH/Tr Down CH/Tr Down /Page Down Volume Up Volume Down Play/Up Play/Up/Slow...
  • Page 8 GENERAL SPECIFICATIONS G-13 Features Auto Head Cleaning Auto Tracking HQ (VHS Standard High Quality) Auto Power On, Auto Play, Auto Rewind, Auto Eject Auto Shut Off Auto Repeat VIDEO PLUS+(SHOWVIEW,G-CODE) CH Auto Set-Up/Auto Clock Forward / Reverse Picture Search One Touch Playback Auto Tuning Anti-Theft End Call...
  • Page 9 GENERAL SPECIFICATIONS G-15 Interface Switch Front Power Play Pause/Still System Select One Touch Playback Input Select Channel Up Channel Down F.FWD/Cue Eject/Stop Main Power SW Volume Up Volume Down Rew/Rev Rec/OTR Rear Main Power SW Indicator Standby Rec/OTR T-Rec On Timer Key Light up Rec/OTR One Touch Playback...

  • Page 10: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS 1-3: TV/VCR BLOCK (Refer to Fig. 1-3) Remove the 2 screws 1. AND P.C. Boards Disconnect the following connectors: 1-1: BACK CABINET (Refer to Fig. 1-1) (CP4202, CP4203, CP401, CP501 and CP502). Remove the 4 screws 1. Unlock the support 2.
  • Page 11 DISASSEMBLY INSTRUCTIONS 1-5: DECK SHIELD PLATE (Refer to Fig. 1-5) Remove the 2 screws 1. Remove the 4 screws 2. Remove the screw 3. Remove the Deck Shield Plate in the direction of arrow (A). AC Head Cover Remove the 3 screws 4. Deck Chassis Remove the Shield Plate Bottom, Shield Plate Bottom (R), Shield Plate Bottom (L) in the direction of arrow (B).

  • Page 12: Removal Of Deck Parts

    DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS NOTE In case of the Locker R installation, check if the two 2-1: TOP BRACKET (Refer to Fig. 2-1) positions of Fig.2-3-B are correctly locked. Extend the 2 supports 1. When you install the Cassette Side R, be sure to move Slide the 2 supports 2 and remove the Top Bracket.
  • Page 13 DISASSEMBLY INSTRUCTIONS 2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A) 2-7: TENSION ASS'Y (Refer to Fig. 2-7-B) Remove the screw 1. Turn the Pinch Roller Cam clockwise so that the Remove the Loading Motor. Tension Holder hook is set to the position of Fig. 2-7-A Remove the Worm.
  • Page 14 DISASSEMBLY INSTRUCTIONS 2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A) Remove the T Brake Spring. Idler Gear Turn the T Brake Arm clockwise and bend the hook Idler Arm Ass'y section to remove it. Unlock the 2 supports 1 and remove the T Brake S Reel Band.
  • Page 15 DISASSEMBLY INSTRUCTIONS 2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/ P5 ARM ASS'Y (Refer to Fig. 2-10-A) Unlock the support 1 and remove the Cassette Opener. Remove the Pinch Roller Block and P5 Arm Ass'y. Cassette Opener Spring Position Fig. 2-11-B 2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12) Pinch Roller Block Remove the screw 1.
  • Page 16 DISASSEMBLY INSTRUCTIONS 2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A) 2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR (Refer to Fig. 2-15-A) Remove the Capstan Belt. Remove the 3 screws 1. Remove the E-Ring 1, then remove the Main Cam. Remove the E-Ring 2, then remove the Pinch Roller Remove the Capstan DD Unit.
  • Page 17 DISASSEMBLY INSTRUCTIONS NOTE 2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP (Refer to Fig. 2-18-A) 1. When you install the Loading Arm S Unit, Loading Arm T Unit and Main Loading Gear, align each marker. Remove the P4 Cap. Unlock the support 1 and remove the Cassette Guide (Refer to Fig.

  • Page 18: Removal Of Anode Cap

    DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction 3. REMOVAL OF ANODE CAP to remove the other. Read the following NOTED items before starting work. NOTE After turning the power off there might still be a potential Take care not to damage the Rubber Cap.

  • Page 19: Removal And Installation Of Flat Package Ic

    DISASSEMBLY INSTRUCTIONS REMOVAL AND INSTALLATION OF When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using FLAT PACKAGE IC a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 4-3.) REMOVAL NOTE Put the Masking Tape (cotton tape) around the Flat...
  • Page 20 DISASSEMBLY INSTRUCTIONS INSTALLATION When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thin- Take care of the polarity of new IC and then install the tip Soldering Iron. (Refer to Fig. 4-8.) new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily.

  • Page 21: Key To Abbreviations

    KEY TO ABBREVIATIONS Audio/Control H.SW Head Switch Automatic Color Control Hertz Audio Erase Integrated Circuit Automatic Frequency Control Intermediate Frequency Automatic Fine Tuning Indicator AFT DET Automatic Fine Tuning Detect Inverter Automatic Gain Control Killer Amplifier Left Antenna Light Emitting Diode A.PB Audio Playback LIMIT AMP...
  • Page 22 KEY TO ABBREVIATIONS SYNC Synchronization SYNC SEP Sync Separator, Separation Transistor TRAC Tracking TRICK PB Trick Playback Test Point UNREG Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display V.PB Video Playback Variable Resistor V.REC Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source...

  • Page 23: Service Mode List

    SERVICE MODE LIST This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter SERVICE MODE, Unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and remocon key for more than 2 seconds.

  • Page 24: Preventive Checks And Service Intervals

    PREVENTIVE CHECKS AND SERVICE INTERVALS The following standard table depends on environmental conditions and usage. Parts replacing time does not mean the life span for individual parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. The following list means standard hours, so the checking hours depends on the conditions.
  • Page 25 PREVENTIVE CHECKS AND SERVICE INTERVALS CLEANING NOTE 2. TAPE RUNNING SYSTEM After cleaning the heads with isopropyl alcohol, do not When cleaning the tape transport system, use the run a tape until the heads dry completely. If the heads gauze moistened with isopropyl alcohol. are not completely dry and alcohol gets on the tape, 3.

  • Page 26: When Replacing Eeprom (Memory) Ic

    WHEN REPLACING EEPROM (MEMORY) IC If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: Initial Data setting will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 30 minutes before Power On or alternatively, discharge backup capacitor.

  • Page 27: Servicing Fixtures And Tools

    SERVICING FIXTURES AND TOOLS Alignment Tape Back tension cassette gauge Torque cassette gauge Taper nut driver (KT-300NR) ST-C6 ST-C7 70909103 70909199 70909228 VTR cleaning kit VTR lubrication kit Grease JG002B Adapter JG002E Dial Torque Gauge (10~90gf•cm) JG002F (60~600gf•cm) JG022 Master Plane JG024A Reel Disk Height JG153 X Value Adjustment JG154 Cable...

  • Page 28: Mechanical Adjustments

    MECHANICAL ADJUSTMENTS 1. CONFIRMATION AND ADJUSTMENT 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION Read the following NOTES before starting work. Set to the PLAY mode. • Place an object which weighs between 450g~500g on Adjust the adjusting section for the Tension Arm the Cassette Tape to keep it steady when you want to position so that the Tension Arm top is within the make the tape run without the Cassette Holder.
  • Page 29 MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE NOTE Install the Torque Gauge (JG002F) and Adapter (JG002B) If the torque is out of the range, replace the following on the S Reel. Set to the Picture Search (Rewind) mode. parts. (Refer to Fig.1-4-B) Check item Replacement Part Then, confirm that it indicates 120~180gf•cm.
  • Page 30 MECHANICAL ADJUSTMENTS 2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ 2-3: TAPE RUNNING ADJUSTMENT CONTROL HEAD (X VALUE ADJUSTMENT) When the Tape Running Mechanism does not work well, Confirm and adjust the height of the Reel Disk. adjust the following items. (Refer to item 1-1) Confirm and adjust the position of the Tension Post.
  • Page 31 MECHANICAL ADJUSTMENTS 3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE 1. Tension Connect P4 Post 2. Tension Arm T Brake Spring 3. Guide Roller T Reel 4. Audio/Control Head S Reel 5. X value adjustment driver hole Adjusting section for the Tension Arm position D2-4...

  • Page 32: Electrical Adjustments

    ELECTRICAL ADJUSTMENTS 1. ADJUSTMENT PROCEDURE 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the (VCR SECTION) circuits or replacing electrical parts or PCB assemblies. 2-1: PG SHIFTER CAUTION Playback the alignment tape. When you exchange IC and Transistor for a heat sink, Press and hold the Tracking-Auto button on the remote apply the silicon grease on the contact section of the heat control more than 2 seconds to set tracking to center.
  • Page 33 ELECTRICAL ADJUSTMENTS (REC TUNER) 2-7: VERTICAL POSITION Place the set with Aging Test for more than 15 minutes. NOTE: Adjust after performing adjustments in section 2-6. Connect the oscillator (39.5MHz) to TP1102. Receive the monoscope pattern from the Pattern Connect the digital voltmeter between the pin 7 of Generator.
  • Page 34 ELECTRICAL ADJUSTMENTS 2-10: OSD HORIZONTAL 2-13: BRIGHT CENT Using the remote control, set the brightness and Receive the PAL black pattern*. (RF Input) contrast to normal position. Using the remote control, set the brightness and Activate the adjustment mode display of Fig. 1-1 and contrast to normal position.
  • Page 35 ELECTRICAL ADJUSTMENTS 2-16: Confirmation of Fixed Value (Step No.) Please check if the fixed values of the each adjustment items are set correctly referring below. FUNCTION RF (50Hz) AGC GAIN R CUTOFF G CUTOFF B DRIVE BRIGHT MAX BRIGHT MIN CONTRAST MAX CONTRAST MIN COLOR MAX...
  • Page 36 ELECTRICAL ADJUSTMENTS 3. PURITY AND CONVERGENCE 3-3: STATIC CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE Receive the crosshatch pattern from the color bar Turn the unit on and let it warm up for at least 30 generator.
  • Page 37 ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) CD803 CRT PCB CP803B CP802 CP801 TP804 J801 CP850 MAIN PCB CP810 VR502 CP820 FB401 T501 T501 TP503 CD601 VR401 TP502 CP401 CD3001 CD602 CP502 J4201 TP4201 TU1101 L503 TP1102 CD850 CD502 AC IN...

  • Page 38: Micon/Operation

    TV BLOCK DIAGRAM SW_VIDEO 21_B T' TEXT TEXT_SYNC 21_G IF/21PIN/ Q602 21_R IN/OUT 21_Y BUFFER Q609 CF605 SWITCHING H_CTL VIDEO SW IC S-TRAP REAR_V_IN IC603 LA7956 MICON/ TU_AUDIO OPERATION Q603, Q611 Q608 V-DRIVE IC IC401 TDA8174A IF/21PIN/ REAR_A_IN_L PROTECT IN/OUT BUFFER REC_TU_V JACK_V...
  • Page 39 Y/C/AUDIO/HEAD AMP BLOCK DIAGRAM PDC/VPD DECODER IC IC4002 SDA5650/X CVBS Q4006 BUFFER Y/C_VIDEO X4001 4.433619MHz Y/C_AUDIO Y/C/AUDIO/CCD/ HEAD AMP IC4001 HA118217F CP4001 6dB AMP 6dB AMP SP-CH2 (L) 2MLPF CTL TRAP CYL. SP COM fh HPF CLEAR C SQUELCH SP-CH1 (R) SYNC DELAY CLPF...

  • Page 40: Power

    MICON/OPERATION BLOCK DIAGRAM SYSCON/TIMER/SERVO IC IC1006 OEC0113B SW1001 SYSTEM RESET IC AV_2 1 OUT TAB SW IC1002 /RES R3111N311A/C AV_1 AT+5.6V MS SEN-A EXT_IN_L EXT_IN_L MS_SEN A Q1009 DA RGB SW TUNER_ON/OFF IF/21PIN/ IN/OUT MS SEN-B MS_SEN B Q1003 TUNER_MUTE TU_AUDIO_MUTE_H VCR_MUTE VCR_A_MUTE...
  • Page 41 IF/21PIN/IN/OUT BLOCK DIAGRAM VIF IC IC6001 LA7567B TU1101 MICON/ OPERATION CP6001 TU AUDIO REC_TU_A Y/C/AUDIO/ Q6005 HEAD AMP TU VIDEO REC_TU_V PRE AMP AV JACK J701 FRONT_V_IN Y/C/AUDIO/ L6006 CF6002 HEAD AMP FRONT_A_IN_L Q6001 VIDEO BUFFER Q4210 TUNER ON/OFF Q4207 MICON/ PERI SW EXT_IN_L...
  • Page 42 T' TEXT BLOCK DIAGRAM T'TEXT IC1201 ET-TVT008B X1201 TEXT_RESET STANBY 13875KHz OSC IN OSC OUT MICON/ OPERATION OSD_R OSD_G Q1262 OSD_B OSD_Y BLANK BUFFER BLUE 29 GREEN TRIPLE ANALOG MPXER IC 30 RED IC1202 MM1231XF 20 VIDEO IN SYNC TEXT_R TEXT_G TEXT_B TEXT_Y...
  • Page 43 PRINTED CIRCUIT BOARDS MAIN/CRT/POWER SW (INSERTED PARTS) SOLDER SIDE CP403 CP810 W023 VR502 W814 IC506 D507 R507 W005 W022 D515 D508 W015 IC501 C531 CP820 W014 R511 W013 D504 D502 W010 R453 C542 C431 W009 W008 C518 D533 R505 D514 R413 D503 R529...
  • Page 44 PRINTED CIRCUIT BOARDS MAIN/CRT (CHIP MOUNTED PARTS) SOLDER SIDE C807 R815_1 R812 R809_1 C806 R821 C413 R531 C541 R532 R523 R510 R553 R516 R520 C554...
  • Page 45 PRINTED CIRCUIT BOARDS SYSCON (INSERTED PARTS) SOLDER SIDE CD602 D4202 CP3001 Q3001 IC3001 CP4203_1 W300 R1289 IC3003 W299 W014 TP1001 R3002 W013 D3004 W822 W293 L604_1 W094 W010 W197 W090 R1025 W008 W006 W291 W087 W194 W083 W199 R613 R647 W007 W192 W081...
  • Page 46 PRINTED CIRCUIT BOARDS SYSCON (CHIP MOUNTED PARTS) SOLDER SIDE C1006 W829 R1011 C4237 C1168 R1115 C1102 Q1104 R4047 C4096 Q306 R1102 R4045 C1210 C4203 IC4002 R4044 C1208 R1112 Q301 R4043 R1206 R1197 C320_1 C4091 C1219 R1203 R4053 C316 C4033 R1255 C1196 R4054 C4002...
  • Page 47 PRINTED CIRCUIT BOARDS OPERATION SOLDER SIDE W806 W801 W015 R352 W813 W802 SW796 SW751 SW797 C779 J701 OS753 S809Y W809 C781 W009 R777 R776 R779 CD355 CD356 W006 J351 R754 CD757_1 R793 R766 R761_1 W805 W013 W004 CD702_1 S809X IF (INSERTED PARTS) IF (CHIP MOUNTED PARTS) SOLDER SIDE SOLDER SIDE...
  • Page 48 Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM BUFFER Q4017 (SYSCON PCB) L4002 KTC3875S_Y_RTK 100uH 0305 FROM POWER Y/C_VIDEO R4065 TP4002 W871 REC_TU_A 1K 1/4W V.ENV REC_TU_V BUFFER Q4006 KTA1504S_Y_RTK Q4007 KTC3875S_Y_RTK R4055 Y/C_AUDIO L4008 R4053 R4054 FROM REGULATOR FROM/TO CHROMA/IF C4035 560K 330K P.CON+9V 0.01 B FRONT_A_IN_L1...
  • Page 49 D1006 MICON SCHEMATIC DIAGRAM D1010 SB140-EIC SB140-EIC (SYSCON PCB) R1096 FROM/TO REGULATOR AT+5.6V C1072 C1030 VCR_POWER_H 68P CH 0.1 F AT+12V CAP_VCO P.CON+5V_C MOTOR_GND C1060 FROM/TO POWER 0.1 B 0.5 2.2 5.2 3.3 2.6 2.5 5.2 1.5 1.6 5.2 2.6 5.2 0 3.5 3.5 3.6 2.8 5.3 C1047...
  • Page 50 POWER SCHEMATIC DIAGRAM (SYSCON PCB) TO Y/C/AUDIO/HEAD AMP FROM REGULTOR REC_TU_V P.CON+5V_A REC_TU_A P.CON+5V_C AT+30V FROM/TO MICON MO_SYNC REC_SVL-H SW_VIDEO REC_AFT REC_AGC_CTL AT+30V +30V 29.8 P.CON+5V_C L1103_2 IF_MOD P.CON+5V_A 100uH 9A06B MO_SYNC R1112 R1105 R1173 R1111 BUFFER R1197 Q1102 330K 3.3K 4.7K KTC3875S_Y_RTK...
  • Page 51 21PIN IN/OUT SCHEMATIC DIAGRAM (SYSCON PCB) FROM/TO MICON KEY_B REC_LED FROM/TO SOUND AMP T-REC_LED SOUND_L+ KEY_A SP_OUT_L W822 W899 STANDBY_H W890 REMOCON_IN SOUND_GND D4202 SB140-EIC POWER ON SW TUNER_ON/OFF Q4212 KRC102SRTK EXT_IN_L C4237 TU_AUDIO_MUTE_H 0.001 CH C4209 TP4201 VIDEO OUT FROM REGULATOR R4224 P.CON+9V...

  • Page 52: Chroma/If

    CHROMA/IF SCHEMATIC DIAGRAM VIDEO SW IC FROM/TO 21PIN IN/OUT (SYSCON PCB) IC603 LA7956 (VIDEO) FROM/TO MICON FRONT_V_IN H_CTL REAR_V_IN VCR_POWER_H L613 video switch P.CON+8V_A TV_POWER_H driver control REAR_A_IN_L 100uH 0305 P.CON+5V_A TU_AUDIO PROTECT JACK_VIDEO DEGAUSS_H 21_B POWER_FAIL[DC] AV_2 21_G TUNER_CTL AGC_M 21_R AV_1...

  • Page 53: Sound Amp

    SOUND AMP SCHEMATIC DIAGRAM (SYSCON PCB) SOUND AMP IC IC352 AN7523 HS352 763WAA0160 FROM CHROMA/IF R307_1 FROM/TO 21PIN IN/OUT SOUND+B 1 3W W812 SOUND_GND SOUND_L+ SP_OUT_L C306 R301 0.47 SOUND_GND SW_AUDIO R306 W908 W878 1K 1/4W MUTE Q301 KTC3875S_Y_RTK C316 FROM MICON R309 0.01 B...

  • Page 54: Regulator

    REGULATOR SCHEMATIC DIAGRAM (SYSCON PCB) 9V REG IC IC3001 KIA78R09API D3003 11E1-EIC TO Y/C/AUDIO/HEAD AMP 13.0 P.CON+9V P.CON+9V P.CON+5V_C FROM/TO MICON FROM TV POWER R3002 VCR_POWER_H CD3001 CP3001 (CP810) 2.2K 1/4W AT+12V B2013H02-9P CU293101 AT+5.6V CAP_VCO 5V REG. C3008 IC3003 P.CON+5V_C AT+12V Q3001...

  • Page 55: T'text

    T’TEXT SCHEMATIC DIAGRAM (SYSCON PCB) L1203 10uH 0305 Q1101 R1115 KTD863_Y BUFFER Q1104 KTC3875S_Y_RTK R1108 FROM REGULATOR P.CON+9V P.CON+5V_C D1203 L1205 D1202 10uH SB140-EIC W867 AT+5.6V 11E1-EIC C1257 SYNC BUFFER Q1253 6.3V KTC3875S_Y_RTK VDD3V1A R1206 C1219 VDD3V1B R1214 0.022 B W854 51 FLAG2 42 OSC OUT...
  • Page 56 TV POWER SCHEMATIC DIAGRAM (MAIN PCB) DEGAUSS_H R508 PROTECT DRIVE Q502 2SA1624 C510 RELAY DRIVE Q504 D516 R501_1 KTC3198 100V FROM/TO DEFLECTION 2.2 7W C R506 1SS133 47K 1/4W SOUND+B TP503 DEGAUSS_H R502 VCR.POWER_H 0.82 2W RY501 SOUND_GND T501_2 ALKS321 81350844 EMERGENCY DEGAUSS COIL...
  • Page 57 DEFLECTION SCHEMATIC DIAGRAM (MAIN PCB) TO DY V-DRIVE IC IC401 TDA8174A CP401 A1561WV2-A5P FB401_1 FQI-14B006 R404_1 11.1 24.5 24.2 330K +-1% VIDEO FROM/TO CHROMA/IF CP403 (CD602) 003P-2100 D403 L402 11E1-EIC V.LINEARTY ELH5L4113 C402 VR401 500V 220P R448 R406 R420 2.7K 1/4W 4.7K 1/4W 1K 1W FROM/TO CHROMA/IF...
  • Page 58 CRT SCHEMATIC DIAGRAM (CRT PCB) CRT PCB TP804 RED AMP W853 Q810 2SC1740SP R828 2.7K 1/4W RED AMP Q801 123.5 KTC4217 R813_1 J801_1 D801 HPS3200-010501 104.1 1SS133 127.5 R810 1.8K TP805 FROM CHROMA/IF C803 W849 GREEN AMP CP850 (CP851) Q811 A2001WV2-5P 2SC1740SP R829...
  • Page 59 IF SCHEMATIC DIAGRAM (IF PCB) C6004 CF6005 TPS6.0MB R6019_1 L6007 R6020 15uH 330 1/4W C6005 0.01 L6006 360K042 C6028_1 100P CH VIDEO C6006 W806 W819 0.01 B L6001 C6007 L6003 BUFFER Q6001 2.2uH 22uH 68P CH 2SA608KF-NP C6019 0.01 B C6001 0.01 B S803X...
  • Page 60 OPERATION SCHEMATIC DIAGRAM (OPERATION PCB) W805 R754 1/4W R780 FROM/TO 21PIN IN/OUT 820 1/4W R771 R772 R773 R774 CD757_1 (CP755) CU292501 1K 1/4W 1.5K 1/4W 2.7K 1/4W 5.6K 1/4W REMOCON_OUT AT+5V POWER_ON_LED Vout KEY_A T-REC_LED OS753 R776 R777 REC_LED PIC-28143TC5 KEY_B 1K 1/4W 1.5K...
  • Page 61 INTERCONNECTION DIAGRAM HEADPHONE JACK J351 TM101 REMOCON SENSOR OS753 J701 OS753 FROM V.OUT TM101 CD355 SP_OUT_R+ HALL MAIN ROTOR SP_OUT_R- SENSOR COIL MAGNET FG SENSOR SPEAKER CAPSTAN DD UNIT ASS’Y OPERATION PCB SP351 M2001 PCB030 IF PCB 8 OHM CD356 TEXA33 PCB350 SP_OUT_L+...

  • Page 62: Tv Power

    WAVEFORMS TV POWER 1 5.0V 0.1ms/div 50.0V 20µs/div 12 PB 50mV 5ms/div DEFLECTION 2 2.0V 20µs/div 7 50.0V 20µs/div 13 REC 0.5V 10µs/div TV POWER 3 2.0V 5ms/div 10.0V 5ms/div 14 REC 0.5V 10µs/div Y/C/AUDIO/HEAD AMP 15 REC 4 200mV 20µs/div 10 REC 2.0V 20µs/div 0.5V 10µs/div...
  • Page 63 WAVEFORMS 22 REC 27 PB 17 REC 1.0V 10µs/div 2.0V 0.5µs/div 100mV 0.5ms/div 18 REC 23 REC 28 PB 0.5V 0.5ms/div 2.0V 20µs/div 2.0V 0.5µs/div 24 REC 30 REC 19 REC 2.0V 5ms/div 2.0V 1ms/div 20.0V 2ms/div POWER 25 REC 20 REC 31 REC 2.0V 20µs/div...
  • Page 64 WAVEFORMS SOUND AMP 45 REC 50 REC 2V 20µs/div 0.5V 0.5ms/div 21PIN/IN/OUT 46 REC 0.5V 10µs/div 52 REC 0.5V 0.5ms/div 47 REC 0.5V 10µs/div 48 REC 100mV 0.5ms/div NOTE: The following waveforms were measured at the point of the corresponding balloon number in the schematic diagram.

  • Page 65: Mechanical Exploded Views

    MECHANICAL EXPLODED VIEW 102B 102A PCB110 (CRT PCB ASS'Y) 102B PCB340 (POWER SW PCB ASS'Y) PCB070 (MAIN PCB ASS'Y) 101B 101F 101G 101E 101C 101G PCB030 (OPERATION PCB ASS'Y) 101D 101A I1-1...
  • Page 66 MECHANICAL EXPLODED VIEW PCB350 (IF PCB ASS'Y) PCB010 (SYSCON PCB ASS'Y) I1-2...

  • Page 67: Chassis Exploded Views

    CHASSIS EXPLODED VIEW (TOP VIEW) CD1501 M2003 UN4001 H5002 H5001 CD1502 M101 NOTE: Applying positions AA for the grease are CLASS MARK displayed for this section. GREASE Check if the correct grease is applied for each position. I2-1...
  • Page 68 CHASSIS EXPLODED VIEW (BOTTOM VIEW) CD1501 M2001 CD1502 NOTE: Applying positions AA for the grease are CLASS MARK displayed for this section. GREASE Check if the correct grease is applied for each position. I2-2...

  • Page 69: Mechanical Replacement Parts List

    MECHANICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description AE000542 A5D502C720 CABINET,FRONT ASSY 101A AE000543 701WPJC206 CABINET,FRONT 101B AE000544 712WPJB776 FLAP 101C BZ710379 713WPA0158 GLASS,LED 101D AE000545 7235490001 BADGE,BRAND 101E AE000546 735WPBA685 BUTTON,FRAME 101F BZ710010 743WKA0032 SPRING,FLAP 101G AE000547 800WQ0A006 FELT SHEET...

  • Page 70: Chassis Replacement Parts List

    CHASSIS REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description BZ610284 A5A513I420A DECK ASSY A5A513I420A BZ710564 85OA400234 PINCH ROLLER BLOCK BZ710796 85OP700039 COVER,BOT BZ710193 85OP200290 BELT,CAPSTAN (S) BZ710515 85OP600581 WORM BZ710094 85OP500083 BASE,AC HEAD BZ710112 85OP800324 SPRING,AC HEAD BZ710516 85OA000459 MAIN CHASSIS ASS'Y BZ710517...

  • Page 71: Electrical Replacement Parts List

    ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description RESISTORS R307 BZ210191 R3X28B010J R,METAL OHM 3W R418 BZ210277 R3X181101J R,METAL OXIDE 100 OHM 1W R423 BZ210229 R3X28A151J R,METAL OXIDE 150 OHM 2W ! R447 BZ210021 R65582680J R,FUSE OHM 1/2W R448 BZ210153 R3X181102J...
  • Page 72 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description DIODES D793 BZ410054 0021721150 SLR-342VCT32 D801 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D802 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D803 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D1001 BZ410094 D97U01501B DIODE,ZENER MTZJ15B T-77 D1002 BZ410006 D1VT001330 DIODE,SILICON 1SS133T-77 D1003...
  • Page 73 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description TRANSISTORS Q1005 BZ410107 0002700690 PHOTO COUPLER RPI-303 Q1006 BZ410097 0000M00390 PHOTO TRANSISTOR ST-304L Q1007 BZ510067 TNAAC05002 COMPOUND TRANSISTOR KRC103SRTK Q1009 BZ410106 0002700680 PHOTO COUPLER RPI-352C40N Q1010 BZ510072 TPAAC05002 COMPOUND TRANSISTOR KRA103SRTK Q1013 BZ510108...
  • Page 74 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description COILS &TRANSFORMERS L4016 BZ310010 021LA6390K COIL L4019 BZ310079 021LA6101J COIL 100 UH L4024 BZ310052 021LA6100K COIL L4025 BZ310052 021LA6100K COIL L4026 BZ310052 021LA6100K COIL L4202 BZ310041 02167F101J COIL 100 UH L4203 BZ310052 021LA6100K...
  • Page 75 ELECTRICAL REPLACEMENT PARTS LIST Location No. TSB P/N Reference No. Description MISCELLANEOUS CP503 BZ614137 069X620030 CONNECTOR PCB SIDE RE-H022TD-1130 CP601 BZ614406 067U014019 WIRE HOLDER B2013H02-14P CP603 BZ614380 069X170379 CONNECTOR PCB SIDE 07JQ-ST CP801 BZ614058 069W010010 CONNECTOR PCB SIDE 005P-2100 CP802 BZ614269 069S320010 CONNECTOR PCB SIDE...
  • Page 76 TOSHIBA VIDEO PRODUCTS PTE. LTD. 438B ALEXANDRA ROAD, BLOCK B #06-01 ALEXANDRA TECHNOPARK SINGAPORE 119968...

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